Apparatus for tanning



(No Model.) ZSheets-Sheet 1.

^ L. SIMPSON. l

APPA-RATUS PoR TANNING. l No. 314,199. Patented Mar.17, 1885.

lill 1"!! WMWSSQS: 'Y I QMMM. a

Mw f

2 N 0 .S DL I S L APPARATUS POR TANNING.

Patented Mar. 17, 1885.

'UNITE PATENT OFFICE.

LENOX SIMPSON, OF PITTSBURG, PENNSYLVANIA.

APPARATUS Foa TANNING.

SPECIFICATION forming part of Letters Patent No, 314,199, dated March 17, 1885.

Application filed Scpte To al; whom it may concern:

Be it known that I, LENox SIMPSON, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Tanning, of which the following is a full, clear, and exact description.

The object of my invention is to arrange and connect a system of revolving exhaust tanning-vats, leaching-vats, and supply-tanks in such manner as to econornize labor, space, and expense.

The invention consists in the particular arrangement and connection of the vats, tanks, and pumps, as hereinafter more fully set forth.

In the drawings, Figure 1, Sheet l, represents an end elevation of the improvement; and Fig. 2, Sheet 2, a top plan view of same.

Similar letters of reference indica-te corresponding parts throughout the different views.

vA A represent a series of revolving tanning vats or cylinders, a particular description of whichmay be found in application marked A, led ot' even date herewith.

B B are a series of supply-tanks, situated upon a frame or scaffolding raised at a slight elevation above the cylinders, and connected by flexible pipes with the supply-tubes which enter the hollow necks at one end of said cylinders.

C G are a series cfleaching-vats, within which the liquor (of varying degrees of strength) is made. From the bottoms of said vats G extend a series of vertical pipes, D, which are provided with cocks d. Said pipes connect with a pipe, E, extending in front of all the leaching-vats, and having both of its extremities closed. Said pipe is connected with a force-pump, F. By this connection it will be seen that on opening one of the cocks d the liquor from that particular vat, and no other, will be drawn up by the pump. The discharge-pipe of pump F is connected by a branch pipe, f, with a'pipe, Gr, extending along the `series of supply-tanks B, said pipe being also closed at either end. Said pipe G is connected by short branch pipes g with each of the supply-tanks, and said branch pipes are cach provided with a cock, g. By this construc- :nber 1G, 18S-l. (No model.)

tion it will be seen that when one of the cocks d and one of the cocks g are opened and the force-pump operated the liquor from `the particular leaching-vat over which the cock d lies will be forced into the particular tank with which the open cock g is connected. The object of this construction is `as follows: The hides contained in the different cylinders may be of different character and designed for different purposes-as, for instance, one cylinder may contain skins designed to be turned into calf-skin, another into harness-leather, a third into sole-leather, and so on. Each of these different characters of hides requires a different treatment, and consequently must have liquors of different strength. Again, should they may have been placed in the cylinders at different times, and hence also require different strengths of liquor, so that ordinarily 1t 1s absolutely indispensable to have liquors of various strengths, and to provide means whereby any strength of liquor may be supplied to any particularv supply-tank (and its connected cylinder) without reference to other liquors or cylinders. By my construction this desideratum is met, and theliquor from any leaching Vat (i. e., of any strength) may be pumped into any desired supply-tank. From the discharge end of each of the cylinders a pipe, h, provided with avcock, h', extends to a second pipe, H, which lies above the series of leaching-vats. Each of these pipes H has a branch pipe, 7L, over each leaching-vat, provided with a cock, hi. By this construction the waste or so-called exhausted acid may be emptied 4into any one of the leaching-vats. It will be understood that in case the. cylinder contains leather at various stages in the tanning process the liquor which would be called exhausted in one cylinder might be far too strong for another cylinder in which the process had just begun, orwhich contained tender skins. It is therefore necessary that each cylinder be enabled to empty its exhaust-liquor into any one of the leaching-vats which may be best suited for its reception. Extending upwardly from the discharge-pipes of the cylinders are exhaust-pipes k, which are connected with a pipe, K, extending above the battery of cylinall the skins be of the same character, yet.

IOO

ders. Each of these pipes is provided with a cock, 7s', by means of which pipe K ina-y be connected with or disconnected from any particular cylinder. Said pipe K is also connectled by a pipe7 k2, with an air-pump, K. By this construction it Will be obvious that the air may be exhausted from any one of the cylinders Without adecting the others; or, on the other hand, the air may be exhausted from two `hand-levers L.

or more simultaneously. Again, it may be necessary to revolve one or more or all ofthe cylinders at the saine time. For this purpose the shaft Z of one of the triplets of Wheels (upon and by which the cylinder turns) ofeaeh cylinder is provided with a Worm-Wheel. A long shaft, L, runs transversely (or at right angles) to said upon said shaft. In juxtaposition to said Worms are feathered friction-clutches Z2, by means of which the Worms may be made secure to the shaft. Operating said clutches are By this construction it Will be seen that one or more or all of said cylinders may be revolved.

Havinp` thus described my invention, what I claim is shafts Z, which revolve looselyV l. The combination, With supply-vats B, leaching-fats C, and pump F, of the vertical pipes D, having; cocks d, the end-.closed pipes E, connected with pipes D and pump F, and the end-closed pipe G, the latter being connected by pipe f with the disehargepipe of said pump, and by cocked pipes g with the supply`tanks B, as and for the purpose specified.

2. The combination, with the discharge pipes of the cylinders A, of the cooked exhaust-pipes 7c, the pipe K, the air-pump K', and the pipe Zo, substantially as shown and described.

3. Ina tanning apparatus of the class described. the combination, with the shaft L, of the shaft Z, revolving loosely thereon and pro vided with a worin-Wheel, the feathered friciiouelutehes Z2, and the hand-levers L, stantially as and for the purpose speeilied.

LENGX SIMPSON.

Vitnesses:

J. A. KURTZ, W. D. THOMAS.

sub- 45 

